Change Request
GML Report Print View

No change to parameter values or any other attributes. NGS geoid models and the NCAT application use bin file format. gtx file format is used by NGS for transformations between vertical CRSs and in the Vertcon app.; also used in the NOAA VDatum app.Open
Change Request Details
Change Id: 2024.035
Report Date: May 15, 2024
Date Closed: August 28, 2024
Reporter: Deva Fagan; Blue Marble Geographics
Request: Review US NGS geoid model file methods.
Comment: No change to parameter values or any other attributes. NGS geoid models and the NCAT application use bin file format. gtx file format is used by NGS for transformations between vertical CRSs and in the Vertcon app.; also used in the NOAA VDatum app.
Action: Added transformation methods 1134 and 1135. For transformations 6326-6327, 7646-7650, 9160-9176, 9229-9231, 9595-9596 and 9622-9626, method code 9665 changed to 1134, method code 1088 changed to 1135. This changes the method name from 'gtx' to 'NGS bin'. For method 9665, amended remarks. For method 1088, added remarks.